Row-Level Security UDF Enforcement of the Security Policy for a Row
Teradata Database executes the row‑level security policy function you assign to the constraint object that corresponds to a table column to enforce the security policy for a data row. You can create a scalar function for each of the four request types (DELETE, INSERT, SELECT, UPDATE) that can be executed against the table on which the security constraint is defined.
See SQL External Routine Programming for information about how to write row‑level security policy UDFs.
See Security Administration for general information about row‑level security.